公开(公告)号：US20240302299A1

公开(公告)日：2024-09-12

申请号：US18575301

申请日：2022-07-01

Applicant: NUCTECH COMPANY LIMITED

Inventor： Weizhen WANG ,  Bicheng LIU ,  Chunguang ZONG ,  Shangmin SUN

IPC: G01N23/083 ,  G01N23/04 ,  H01J25/50

CPC classification number: G01N23/083 ,  G01N23/04 ,  G01N2223/20 ,  H01J25/50

Abstract: An inspection system comprises: a radiation source; a detector configured to detect a signal when radiation emitted by the radiation source acts on the inspected object; and a processor in communication connection with the radiation source and configured to determine at least one periodic radiation combination corresponding to a type of the object according to the type of the object, select periodic radiation combinations respectively corresponding to at least two different portions of the object in the at least one periodic radiation combination, and cause the radiation source to emit radiation to the at least two corresponding different portions in selected periodic radiation combinations during the time that the object is scanned, wherein a periodic radiation combination is a chronological arrangement of at least one radiation pulse output by the radiation source in each scanning period. An inspection method is also provided.

公开(公告)号：US20220082723A1

公开(公告)日：2022-03-17

申请号：US17420132

申请日：2020-01-03

Applicant: NUCTECH COMPANY LIMITED ,  NUCTECH (BEIJING) COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Quanwei SONG ,  Xuping FAN ,  Junping SHI ,  Yuan HE ,  Hui MENG ,  Chunguang ZONG ,  Yu HU ,  Shangmin SUN ,  Jinguo CAO

IPC: G01V5/00

Abstract: The present disclosure relates to a security inspection device and a transfer method, and the security inspection device includes an arm frame, provided with detectors, and configured to form an inspection channel, a first compartment, internally provided with a radiation source and connected with the arm frame, a protection wall, connected with the first compartment or the arm frame, and configured to perform radiation protection for an object to be protected, and a tire, configured to enable the security inspection device to move relative to the ground, and the arm frame, the first compartment and the protection wall are set to be transported together in a connected state.

公开(公告)号：US20210270991A1

公开(公告)日：2021-09-02

申请号：US17255394

申请日：2020-01-06

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH (BEIJING) COMPANY LIMITED ,  NUCTECH COMPANY LIMITED

Inventor： Yanwei XU ,  Weifeng YU ,  Yu HU ,  Chunguang ZONG ,  Shangmin SUN

IPC: G01V5/00 ,  G01S17/894 ,  G06K9/78

Abstract: The present disclosure relates to a security scanning inspection system and method. The security scanning inspection system comprises a detector, a scanning device and a controller, wherein the detector is configured to detect a protective attribute of an object to be inspected; the scanning device is movably arranged and the scanning device is configured to emit a scanning ray during movement to perform a security scanning inspection on the object to be inspected, the scanning device comprising at least two working modes, wherein a dose of a scanning ray in each working mode is different from a dose of a scanning ray in any other working modes; and the controller configured to select a working mode of the scanning device according to the protective attribute of the object to be inspected detected by the detector.

公开(公告)号：US20190204243A1

公开(公告)日：2019-07-04

申请号：US16234625

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jianmin LI ,  Xiulin NI ,  Yulan LI ,  Yuanjing LI ,  Zhiqiang CHEN ,  Li ZHANG ,  Liang LI ,  Xiang ZOU ,  Weifeng YU ,  Hejun ZHOU ,  Chunguang ZONG

IPC: G01N23/046

CPC classification number: G01N23/046 ,  G01N2223/33 ,  G01V5/005

Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.

公开(公告)号：US20170023697A1

公开(公告)日：2017-01-26

申请号：US15217787

申请日：2016-07-22

Applicant: Tsinghua University ,  NUCTECH COMPANY LIMITED

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Ziran ZHAO ,  Yaohong LIU ,  Juan ZHENG ,  Jianping GU ,  Chunguang ZONG

IPC: G01V5/00

CPC classification number: G01V5/0041 ,  G01N23/04 ,  G01N23/046 ,  G01N23/06 ,  G01N23/083 ,  G01N23/087 ,  G01N23/10 ,  G01V5/0016 ,  G01V5/005 ,  G01V5/12

Abstract: Disclosed is a method and device for estimating weight of an object to be inspected in an inspection system. An effective atomic number and a high-energy gray value of the dual-energy corresponding to each pixel of the object to be inspected are obtained by a dual-energy radiation scanning. A mass-thickness value for a corresponding pixel is obtained from a pre-created mass-thickness attenuation curve by utilizing the effective atomic numbers and the high-energy gray value of the dual-energy for respective pixels. Weight information for at least a part of the object to be inspected is calculated by multiplying the mass-thickness value by the area of the pixel. Such a method may accurately calculate the weight of the object to be inspected and save the cost for a conventional weighing hardware.

Abstract translation: 公开了一种用于在检查系统中估计被检查物体的重量的方法和装置。 通过双能量辐射扫描获得与待检测对象的每个像素相对应的双能量的有效原子序数和高能灰度值。 通过利用有效原子序数和相应像素的双能量的高能量灰度值，从预先创建的质量厚度衰减曲线获得相应像素的质量厚度值。 通过将质量厚度值乘以像素的面积来计算待检查对象的至少一部分的重量信息。 这种方法可以精确地计算待检查物体的重量并节省常规称重硬件的成本。

公开(公告)号：US20240319401A1

公开(公告)日：2024-09-26

申请号：US18260008

申请日：2021-12-10

Applicant: NUCTECH COMPANY LIMITED ,  NUCTECH (BEIJING) COMPANY LIMITED

Inventor： Yanwei XU ,  Shangmin SUN ,  Chunguang ZONG ,  Yu HU ,  Yuan MA

IPC: G01V5/22

CPC classification number: G01V5/232

Abstract: A vehicle safety inspection system and method are provided. The vehicle safety inspection system includes: a scanning device mounted in an inspection region for scanning a detected vehicle; an imaging device for acquiring an image of the vehicle being driven into the inspection region; a recognition module for recognizing the image and determining a type of the vehicle according to a recognized image; a selection module for selecting a feature of a trunk of the vehicle according to a determined type of the vehicle; a position sensor for detecting a position of a predetermined part of the vehicle in the inspection region; and a controller for controlling the scanning device to scan and inspect the trunk when a front end section of the trunk of the vehicle is determined to enter a scanning region of the scanning device according to the feature and position of the vehicle.

公开(公告)号：US20240312753A1

公开(公告)日：2024-09-19

申请号：US18575257

申请日：2022-07-01

Applicant: NUCTECH COMPANY LIMITED

Inventor： Weizhen WANG ,  Bicheng LIU ,  Chunguang ZONG ,  Shangmin SUN

IPC: H01J25/50 ,  G01N23/04 ,  G01N23/083 ,  H05H9/00

CPC classification number: H01J25/50 ,  G01N23/04 ,  G01N23/083 ,  H05H9/00 ,  G01N2223/20

Abstract: A radiation inspection system includes: a single ray source having a plurality of accelerating tubes, and the plurality of accelerating tubes respectively generate a plurality of rays having different energies, and beam exit directions of the plurality of accelerating tubes comprise at least two different beam exit directions; a plurality of detectors configured to detect a signal when rays emitted by the single ray source act on the inspected object; and a processor in communication connection with the single ray source and configured to respectively control the plurality of accelerating tubes. A radiation inspection method is also provided.

公开(公告)号：US20240069240A1

公开(公告)日：2024-02-29

申请号：US18260037

申请日：2021-12-09

Applicant: NUCTECH COMPANY LIMITED

Inventor： Lei LIU ,  Zheng JI ,  Shangmin SUN ,  Chunguang ZONG ,  Yu HU ,  Yuan MA

IPC: G01V5/00 ,  G01N23/10

CPC classification number: G01V5/0016 ,  G01N23/10 ,  G01N2223/643

Abstract: The present disclosure provides a radiation inspection device, which has a transportation state and a working state, and includes a container with an adjustable width, and the width of the container in the transportation state is smaller than that in the working state; a radiation inspection apparatus arranged in the container and including a radiation source and a detector, and in the transportation state, the length of the radiation inspection apparatus is arranged along the length direction of the container, and in the working state, the length of the radiation inspection apparatus is arranged along the width direction of the container to perform radiation scanning inspection on vehicles passing through the container along the length direction; a rotating apparatus arranged in the container and configured to rotate the radiation inspection apparatus when the radiation inspection device is switched between the transportation state and the working state.

公开(公告)号：US20220099858A1

公开(公告)日：2022-03-31

申请号：US17420676

申请日：2020-01-06

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY ,  NUCTECH (BEIJING) COMPANY LIMITED

Inventor： Chunguang ZONG ,  Quanwei SONG ,  Kejin GAO ,  Shangmin SUN ,  Junping SHI ,  Yuan HE ,  Yu HU ,  Feng WANG ,  Jinguo CAO

IPC: G01V5/00 ,  G01N23/10

Abstract: An inspection device is provided, includes a first vehicle body, a radiation source, arranged in the first vehicle body, a second vehicle body, a protective wall, arranged on the second vehicle body, a boom, and detectors, arranged on the boom, and the boom is rotatably connected to the first vehicle body and the second vehicle body, forms an inspection passage together with the first vehicle body and the second vehicle body. The inspection device can improve the adaptability.

公开(公告)号：US20220099601A1

公开(公告)日：2022-03-31

申请号：US17420681

申请日：2020-01-03

Applicant: NUCTECH (BEIJING) COMPANY LIMITED ,  NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Li ZHANG ,  Jianmin LI ,  Shangmin SUN ,  Chunguang ZONG ,  Yu HU ,  Quanwei SONG ,  Hejun ZHOU ,  Weifeng YU ,  Jinguo CAO ,  Bing FU

IPC: G01N23/10 ,  G01N23/04 ,  G01N23/083

Abstract: The present disclosure provides a radiation inspection apparatus and a radiation inspection method. The radiation inspection apparatus includes: a radiation inspection device comprising a ray source and a detector that cooperates with the ray source to perform scanning inspection on an object to be inspected, the radiation inspection device having an inspection channel for the object to be inspected to pass through when scanning inspection is performed thereon; and traveling wheels provided at the bottom of the radiation inspection device to enable the radiation inspection apparatus to travel in an extension direction of the inspection channel, and the traveling wheels are configured to rotate 90° to enable the radiation inspection apparatus to travel in a direction perpendicular to the extension direction of the inspection channel.